n.
Pronunciation: ' h ī -p ə - ˌ sen-t ə r
Function: noun
Date: 1905
1 : the focus of an earthquake ― compare EPICENTER 1
2 : the point on the earth's surface directly below the center of a nuclear bomb explosion
– hy · po · cen · tral \ ˌ h ī -p ə - ' sen-tr ə l \ adjective